Medical Definition of Nystagmus test

1.
A test for vestibular function, made by irrigating the external auditory meatus with either hot or cold water; this normally causes stimulation of the vestibular apparatus, resulting in nystagmus and past-pointing; in vestibular disease, the response may be reduced or absent.
Synonym: caloric test, nystagmus test.
(05 Mar 2000)

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